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Finding the Fourth Proportional to 125,232.97, 187,860.15 and 69,111.82

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Solution

The fourth proportional to 125,232.97, 187,860.15 and 69,111.82 is: 103,673.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,232.97 : 187,860.15 = 69,111.82 : x
  2. Step 2: Convert to fraction form
    125,232.97/187,860.15 = 69,111.82/x
  3. Step 3: Cross multiply
    125,232.97x = 187,860.15 × 69,111.82
  4. Step 4: Simplify right side
    125,232.97x = 12,983,355,932.67
  5. Step 5: Solve for x
    x = 12,983,355,932.67/125,232.97
  6. Step 6: Final answer
    x = 103,673.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.